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L. SCHORSCHi DRAWING TUBE OF RING SPINNING MACHINES. APPLICATION FILEDAUG 8. 19x2.

Patented 17,.

2 SHtETS--SHEE (gm/@6517 I f 5 w go ad 1/1 24 L. SCHORSCH.

DRAWING TUBE OF RING SPINNING MACHINES.

APPLICATION FILED AUG 8, I912.

Patented Jan 17, 1922..

2 SIIhET "SHEET LUDWIG SCHORSCH, 0F

.BIALA, AUSTRIA, ASSIGNOR TO FIRM G. JOSEPHYS ERBEN, OF BIELITZ,AUSTRIA.

DRAWING TUBE 0F RING-SPINNING MACHINES.

Specification of Letters Patent.

Patented J an. 17, 1922.

Application filed August 8, 1912. Serial No. 714,104.

(GRANTED URDEB. THE PROVISIONS OF THE ACT 02 MARCH 3, 1921, 41 STAT. L,1313.)

T 0 all whom it may COILCGWL.

Be it known that I, Lunwio SoHonsoH, sub'ect of the Emperor of Austria,residing at iala, Galicia, Austria, have invented certain new and usefulImprovements in Drawing Tubes of Ring-Spinning Machines, (for whiclrlhave made application in Austria Aug. 24, 1911, and J uly2, 1912,patents numbered 54,399 and 61.901, respectively; in Great Britain July15, 1912, and July 16, 1912, patents numbered 16,495 of 1912 and 16,585of 1912, respectively; in France July v1.9, 1912, Patent No. 446,256,and in Belgium July 20, 1912, Patent No. 247,7 54,) of which thefollowin is a specification.

The use of the ring spinnin machine for spinning carded yarn requireshighly skilled operators when it is desired to work the ring spinningmachine in an economical manner with the smallest possible number ofoperators, because it is difiicult to insert broken roving into thedrawing tube whilst the machine is working.

This is the chief reason why the ring spinning machine has up till nowbeen em-' ployed only to a comparatively limited extent for working oncarded yarn. Consequently the designers of ring spinning machines havebeen directed to producing a drawing tube which will feed the yarnautomatically to the drawing rollers.

Now the present invention-has for its object to provide an improveddrawing tube for ring spinning machines working on carded yarn whichfeeds the yarn automatically to the drawing rollers, so that it is nolonger necessary to draw the roving with a hook through the drawingtube, but it is sufficient to introduce the roving by hand into theupper opening of the drawing tube.

The automatic drawin of the roving through the drawing tube 1s effectedby pro viding the drawing tube according to this invention .with aconical bore instead of the usual axial cylindrical bore. said conicalbore increasing in diameter from the inlet opening towards the yarnoutlet opening. ()r it is provided with a bore inclined towards the axisof the drawing tube.

In the accompanying drawings four con structions of drawln tubes areillustrated by way of example in longitudinal section and viz. Figs. 1and 3 show a drawing tube for yarns with small draw and Figs. 2 and 4show a drawing tube for yarns with large draw.

As can be seen from Figs. 1 and 3 the roving F delivered by the feedrollers Z passes through the inlet aperture 0 into the drawing tube Rwhich is mounted in the tube stand B. The drawing tube is rotated bymeans of the cord S passing around the whorl 1V.

The bore of the drawing tube instead of being cylindrical as usual. ismade of conical shape enlarging from the upper aperture 0 towards theneedle N, as shown in Figs. '1 and 2, orthe bore of the drawing tube isinclined to the axis of the tube, as shown in Figs. 3 and 4. By thismeans the end of the roving which enters the upper aperture 0 is carriedround by its friction against the side of the drawing tube.

The centrifugal action produced by the rotation of the roving, impartsto the latter a tendency to increase its radius of rotation and. thusmove away from the axis of ro-, tation of: the tube. The resultoi" thisis to cause the end of the roving to follow the downwardly increasingbore of the tube (Figs. 1 and 2) or the bore which is gradually recedingfrom the axis of the tube (Figs. 3 and 4), and thus pass through thelatter, whereupon on issuing from the lower aperture U the roving iscaught by the needle N and fed to the drawing rollers V. For yarns whichare being spun with small draw, such as waste cotton, waste linen andthe like, the arrangement of the drawing tube according to Figs. 1 and 3is sufficient. For woollen yarns however which are spun with a largerdraw it is necessary to impart to the roving that vibrating motion whichis attained, when spinning with the selfartor, by the turning of theroving over the point of the rotating spindle, and which enables toattain the large draw.

For this purpose the upper end of the drawing tube is not truncated butis provided in the same manner as the lower end with a needle N (Figs. 2and 4; over which the roving is compelled to turn once at eachrevolution of the drawing tube in a similar manner as it does over thepoint of the spin dle of the selfactor.

The improved drawing tube constitutes an important improvement in ringspinning machines working on carded yarn, the man ufacture is renderedmore easy and is increased, because it allows of dispensing with thedrawing of the roving by means of ii 11001: through the tube, whichoperation takes up a great deal of time and requires skilled operators.The attendance on the machine is thus considerably simplified.

Besides by this construction of the drawing tubes the applicability ofthe machine and the'quality of its yield is increased because bothmaterials with a large draw and such with a small draw can be span in aprofitable manner.

Claims.

1. A drawing tube comprising a whorl, a tube on which the whorl ismounted, said tube having a central conical passage, a needle extensionat the larger end of said passage, there being a hole at the base of theneedle communicating with said passage and arranged laterally thereof topermit the roving to pass in a straight line from the smaller end ofsaid passage and hole, and then pass around said needle.

2. A drawing tube comprising a whorl, a tube on which the whorl ismounted, said tube having a central conical bore, a concentric conicalneedle extension at the lower end of said tube, having a hole at itsbase communicating with the larger lower end of said bore and arrangedlaterally thereof to permit the rovin to pass in a straight lineentirely throng said bore and hole, aconccntric needle extension at theupper end of said tube having a hole at its base to permit the entranceof the roving to the bore.

3. A drawing tube comprising a whorl in combination with a tube on whichthe whorl is mounted and having a conical bore which is enlargedcontinuously from the entrance to the delivery end of the tube portion,said bore having a'laterally arranged hole at its base, and a needleforming a concentric extension of said tube.

4. A drawing tube comprising a whorl in combination with a tube on whichthe whorl is mounted, said portion having a conical bore which isenlarged continuously from the 'entrance end to the delivery end of thetube and terminates in a laterally arranged hole through whichthe-rovingwithout bend, and a pointed end donning a needle at thedelivery end of the tube portion. T

5. A drawing tube comprising a whorl, in/ combination with a tube onwhich the whorl is mounted, said tube having a conical bore whi h isenlarged continuously from the en'- trance end up to the delivery endot' the tube and terminates in a laterally arranged hole. and pointedends forming a needle at the entrance and at the deliver 1 end of thetube portion. i

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

LUDWIG SCHORSCH. Witnesses Josnr R-UBINsKI, AUGUST Fnoenn.

